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4e9d01b50e
We create and destroy ScaledFonts for every piece of text we write. That causes a huge amount of duplicated data within the recording. This splits out the recording of the font data itself from the ScaledFont. The key generated to determine uniqueness could probably be fairly easily faked, but for our purposes that doesn't matter.
101 lines
2.5 KiB
C++
101 lines
2.5 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "ScaledFontWin.h"
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#include "AutoHelpersWin.h"
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#include "Logging.h"
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#include "SFNTData.h"
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#ifdef USE_SKIA
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#include "skia/include/ports/SkTypeface_win.h"
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#endif
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#ifdef USE_CAIRO_SCALED_FONT
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#include "cairo-win32.h"
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#endif
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namespace mozilla {
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namespace gfx {
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ScaledFontWin::ScaledFontWin(LOGFONT* aFont, Float aSize)
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: ScaledFontBase(aSize)
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, mLogFont(*aFont)
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{
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}
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bool
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ScaledFontWin::GetFontFileData(FontFileDataOutput aDataCallback, void *aBaton)
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{
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AutoDC dc;
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AutoSelectFont font(dc.GetDC(), &mLogFont);
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// Check for a font collection first.
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uint32_t table = 0x66637474; // 'ttcf'
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uint32_t tableSize = ::GetFontData(dc.GetDC(), table, 0, nullptr, 0);
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if (tableSize == GDI_ERROR) {
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// Try as if just a single font.
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table = 0;
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tableSize = ::GetFontData(dc.GetDC(), table, 0, nullptr, 0);
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if (tableSize == GDI_ERROR) {
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return false;
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}
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}
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UniquePtr<uint8_t[]> fontData(new uint8_t[tableSize]);
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uint32_t sizeGot =
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::GetFontData(dc.GetDC(), table, 0, fontData.get(), tableSize);
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if (sizeGot != tableSize) {
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return false;
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}
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// If it's a font collection then attempt to get the index.
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uint32_t index = 0;
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if (table != 0) {
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UniquePtr<SFNTData> sfntData = SFNTData::Create(fontData.get(),
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tableSize);
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if (!sfntData) {
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gfxWarning() << "Failed to create SFNTData for GetFontFileData.";
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return false;
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}
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// We cast here because for VS2015 char16_t != wchar_t, even though they are
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// both 16 bit.
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if (!sfntData->GetIndexForU16Name(
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reinterpret_cast<char16_t*>(mLogFont.lfFaceName), &index)) {
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gfxWarning() << "Failed to get index for face name.";
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return false;
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}
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}
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aDataCallback(fontData.get(), tableSize, index, mSize, aBaton);
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return true;
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}
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#ifdef USE_SKIA
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SkTypeface* ScaledFontWin::GetSkTypeface()
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{
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if (!mTypeface) {
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mTypeface = SkCreateTypefaceFromLOGFONT(mLogFont);
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}
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return mTypeface;
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}
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#endif
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#ifdef USE_CAIRO_SCALED_FONT
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cairo_font_face_t*
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ScaledFontWin::GetCairoFontFace()
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{
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if (mLogFont.lfFaceName[0] == 0) {
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return nullptr;
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}
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return cairo_win32_font_face_create_for_logfontw(&mLogFont);
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}
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#endif
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}
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}
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